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Create slimy, gooey Rainbow worms, instantly! The moment the worm goo is added to the activator solution, Rainbow worms magically appear. You can make fat worms, skinny worms, short worms, long worms, straight worms, zigzag worms, worm eggs, color changing worms, or even a worm ring or bracelet. The secret is in the awesome world of polymer science. Makes more than 40 feet of worms. It's hand-on chemistry fun! This 5x8.5x2 inch package contains 120 mL clear worm goo, 10g calcium chloride, three fizzing color tablets, three plastic cups, plastic worm squirter and instructions. Recommended for ages 8 and up. WARNING: This set contains chemicals that may be harmful if misused. Conforms to ASTHF-963. Imported.